茉莉芬芳2008
你这句中文的表达不够清楚，若你是指某人的专业知识理论性强与实践性强：He has extensive professional expertise and capability to solve practical problems.若你是指某一专业知识的理论性强与实践性强：This professional knowledge is of sound theoretical basis and feasible applicability.
脸红红1121
Students should not only have enough knowledge reserves, should also have a strong practical ability
